broad cortex with mucilage canals is the characteristic feature of
a.
Leaf of Williamsonia
b.
Leaf of Cycadeoidea
c.
Stem of Williamsonia
d.
Stem of Cycadeoidea
please give one word answer
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What do you understand by the term "potential difference" ?
(b) What is meant by saying that the potential difference between two points is 1volt?
(c) What is the potential difference between the terminals of battery if 250joules of work is required to transfer 20 coulombs of charge from one terminal of battery to the other ?
(d) What is a voltmeter ? How is a voltmeter connected in the circuit to measure the potential difference between two points. Explain with the help of a diagram.
(e) State whether a voltmeter has a high resistance or a low resistance. Give reason for your answer
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